Abstract:
The National Geophysical Data Center interactive map services provide visual display of one or more data layers, often with links to download the underlying data. Users can view layers containing different types of data, adding reference information such as continents, rivers, and political boundaries if desired. Zoom, pan, identify, search, find, and hyperlink capabilities are also available.

Access Constraints
These maps may contain large graphics and may take a long time to load, especially over a slow connection. They also require current browsers with javascript enabled. Macintosh users, especially should make sure that they have at least Netscape 6 or IE 5. PC users should have either Netscape or IE 4 or higher.